US 12,333,112 B2
System and method for parallel touch sensing
Guozhong Shen, Fremont, CA (US); Tom Vandermeijden, San Jose, CA (US); and Ching-Hsung Wang, Santa Clara, CA (US)
Assigned to Synaptics Incorporated, San Jose, CA (US)
Filed by Synaptics Incorporated, San Jose, CA (US)
Filed on Apr. 23, 2024, as Appl. No. 18/643,808.
Claims priority of provisional application 63/465,201, filed on May 9, 2023.
Prior Publication US 2024/0377907 A1, Nov. 14, 2024
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0418 (2013.01) [G06F 3/0446 (2019.05)] 20 Claims
OG exemplary drawing
 
1. A touch sensor comprising:
a plurality of transmitter electrodes comprising:
a first subset of positive transmitter electrodes configured to be driven by a positive sensing signal;
a second subset of negative transmitter electrodes configured to be driven by a negative sensing signal,
wherein each positive transmitter electrode of the first subset of positive transmitter electrodes spatially alternates with a negative transmitter electrode of the second subset of negative transmitter electrodes;
a plurality of receiver electrodes arranged in differential pairs, each differential pair comprising:
a positive receiver electrode coupled to at least one of the first subset of positive transmitter electrodes;
a negative receiver electrode coupled to at least one of the second subset of negative transmitter electrodes; and
a sensor circuit configured to provide the positive sensing signal and the negative sensing signal, and to receive a first resulting signal from the positive receiver electrode and a second resulting signal from the negative receiver electrode, wherein the first resulting signal and the second resulting signal are combined to mitigate noise.